• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista QSFP-40G-ER4-Arista | 40GBASE-ER4 Transceiver, 40km Single-Mode, LC

QSFP-40G-ER4-Arista

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Description

The Arista QSFP-40G-ER4 is a 40GBASE-ER4 QSFP+ optical transceiver designed for extended-reach single-mode fibre deployments up to 40km. It uses four CWDM channels at wavelengths 1271, 1291, 1311, and 1331nm multiplexed over duplex LC connectors, ideal for metro area networks and long-haul data centre interconnects. Compliant with IEEE 802.3ba and QSFP+ MSA standards, this hot-swappable module supports Digital Diagnostics Monitoring (DDM) for real-time performance tracking.

Features

IEEE 802.3ba 40GBASE-ER4 compliant for extended reach applications
- Four-channel CWDM optical multiplexing (1271, 1291, 1311, 1331nm wavelengths)
- Duplex LC connector for simplified cabling infrastructure
- Digital Diagnostics Monitoring (DDM) for real-time performance tracking
- Hot-swappable for zero-downtime maintenance and deployment
- Low power consumption with single 3.3V power supply
- MSA-compliant QSFP+ form factor for broad platform compatibility
- Suitable for metro area networks, campus backbones, and DCI applications
- RoHS-6 compliant for environmental responsibility

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: QSFP+ (Quad Small Form-Factor Pluggable)
- Data Rate: 40 Gbps (4 x 10 Gbps channels)
- Wavelength: CWDM 1271, 1291, 1311, 1331nm
- Maximum Distance: 40km over OS2 single-mode fibre (SMF)
- Connector Type: Duplex LC
- Standards Compliance: IEEE 802.3ba 40GBASE-ER4, QSFP+ MSA, SFF-8436, SFF-8636
- Digital Diagnostics Monitoring: DDM/DOM supported
- Power Supply: Single 3.3V
- Operating Temperature: 0°C to 70°C (commercial grade)
- Hot-Swappable: Yes
- RoHS Compliant: Yes

FAQs

Q: What is the maximum transmission distance for this transceiver?
A: The QSFP-40G-ER4 supports transmission distances up to 40km over OS2 single-mode fibre, making it suitable for metro and long-haul network applications.

Q: Is this module compatible with other vendors' equipment?
A: While designed for Arista platforms, this transceiver follows IEEE 802.3ba 40GBASE-ER4 standards and should be optically interoperable with compliant equipment from other vendors. Always verify compatibility with your specific hardware before deployment.

Q: What type of fibre cable is required?
A: This transceiver requires duplex single-mode fibre (SMF) OS2 cable with LC connectors. It uses four CWDM wavelengths multiplexed over a single fibre pair.

Q: Does this module support Digital Diagnostics Monitoring?
A: Yes, DDM/DOM is supported, enabling real-time monitoring of critical operating parameters including optical transmit and receive power, temperature, voltage, and transmit bias current.

Q: What is the difference between ER4 and LR4 transceivers?
A: ER4 (Extended Reach) modules support up to 40km transmission, while LR4 (Long Reach) modules typically support up to 10km. ER4 transceivers are designed for longer-distance metro and regional network deployments.

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